So there might be a few people that need or want to have some changes done to their PCMs and it may not be worth it to invest in the hardware/software to do minor changes and such.
So I'm going to start doing this for the 96 and up PCMs, for now I am going to offer up the ability for you to make the following changes:
Modify EGR/AIR/EVAP/VATS settings
Change VIN number
Adjust for different sized injectors(for marine or 2114 intake swap).
Adjust for tire size/gear ratio changes.
Enable electric fan control on models that support it(97 and up?)
Eventually, this list will expand, to include tuning adjustments, depending on what you guys want/need to have done.
UPDATE: Winnivan noticed that Open Source PCM programming is now available using PCM Hammer and TunerPro with the proper adapter for supported PCMs. Note that most of the PCM/OS from our vans are not supported. But for those that are, it's a great option.
I recommend the VXDiag VCX Nano available for about $100 for the USB version, and $120 for the WIFI version https://amzn.to/3cFPw53 would provide good versatility as it comes with the Tech2Win emulator that can do virtually everything that the Tech2 can do. Make sure to shop around as prices can vary.
Or you can use a cheaper ~$60 OBD2 Bluetooth Adapter https://amzn.to/3xhmyjH
GitHub - LegacyNsfw/PcmHacks: PCM Hammer & PCM Logger, tools for General Motors Powertrain Control Modules (PCMs).
TunerPro and TunerPro RT - Professional Automobile Tuning Software
Attached is the PCM pinout spreadsheet for the 1996-2005 A/S vans PCMs If you need an office suite to use with it, I recommend https://www.libreoffice.org/ As always, remove the .txt from the file name as our forum software doesn't allow me to attach spreadsheets.
So I'm going to start doing this for the 96 and up PCMs, for now I am going to offer up the ability for you to make the following changes:
Modify EGR/AIR/EVAP/VATS settings
Change VIN number
Adjust for different sized injectors(for marine or 2114 intake swap).
Adjust for tire size/gear ratio changes.
Enable electric fan control on models that support it(97 and up?)
Eventually, this list will expand, to include tuning adjustments, depending on what you guys want/need to have done.
UPDATE: Winnivan noticed that Open Source PCM programming is now available using PCM Hammer and TunerPro with the proper adapter for supported PCMs. Note that most of the PCM/OS from our vans are not supported. But for those that are, it's a great option.
I recommend the VXDiag VCX Nano available for about $100 for the USB version, and $120 for the WIFI version https://amzn.to/3cFPw53 would provide good versatility as it comes with the Tech2Win emulator that can do virtually everything that the Tech2 can do. Make sure to shop around as prices can vary.
Or you can use a cheaper ~$60 OBD2 Bluetooth Adapter https://amzn.to/3xhmyjH
GitHub - LegacyNsfw/PcmHacks: PCM Hammer & PCM Logger, tools for General Motors Powertrain Control Modules (PCMs).
TunerPro and TunerPro RT - Professional Automobile Tuning Software
Attached is the PCM pinout spreadsheet for the 1996-2005 A/S vans PCMs If you need an office suite to use with it, I recommend https://www.libreoffice.org/ As always, remove the .txt from the file name as our forum software doesn't allow me to attach spreadsheets.